<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>颜色</title>
    <style>
        h1{
            /*color: #ff0000;*/
            /*color: #0f0;*/
            /*color: rgb(0,0,255);*/
            color: rgba(255,0,0,0.7);
        }
    </style>
</head>
<body>
<h1>颜色测试</h1>


</body>
</html>